Table 1.
Search strategy utilised for MEDLINE 1946 to January 2012
| Batch | Search term (MESH) | Combination | Result |
|---|---|---|---|
| 1 | Pregnancy Complications/OR Pregnancy/OR Pregnancy Outcome/OR Pregnancy, High Risk/ | 646,055 | |
| 2 | Prenatal Care/OR Pregnancy/OR Pregnancy Complications | 647,726 | |
| 3 | Antenatal.mp. | 18,393 | |
| 4 | Gestation intervention.mp. | 4 | |
| 5 | 1 OR 2 OR 3 OR 4 | 651,321 | |
| 6 | Overweight.mp. OR Obesity/OR Overweight/OR Body Weight/ | 249,097 | |
| 7 | Obesity/OR Obesity, Morbid/or Obesity.mp. | 145,882 | |
| 8 | Body Weight/OR Obesity/OR Body Mass Index/or BMI.mp. OR Overweight/ | 293,584 | |
| 9 | 6 OR 7 OR 8 | 328,089 | |
| 10 | 5 AND 9 | 21,583 | |
| 11 | Diet, Fat-Restricted/OR Diet/OR Diet, Protein-Restricted/OR Diet, Carbohydrate-Restricted/OR Diet.mp. OR Diet, Reducing/OR Diet Therapy/ | 255,985 | |
| 12 | Life Style/ | 36,837 | |
| 13 | Health Education/ | 48,625 | |
| 14 | Patient Education as Topic/ | 63,238 | |
| 15 | Exercise.mp. OR Exercise/OR Exercise, Therapy/ | 192,937 | |
| 16 | Health Promotion/ | 43,967 | |
| 17 | Weight Loss/ | 19,434 | |
| 18 | 11 OR 12 OR 13 OR 14 OR 15 OR 16 OR 17 | 601,919 | |
| 19 | 10 AND 18 | 3,769 | |
| 20 | LIMIT 19 TO ((female or humans or pregnancy) and (clinical trial, all OR clinical trial, phase i OR clinical trial, phase ii OR clinical trial, phase iii OR clinical trial, phase iv OR clinical trial OR controlled clinical trial OR randomized controlled trial)) | 154 |